Home / Forums / General melodica discussion / Sound Test Hohner Professional 36 & Wooden Yamaha P-37D / Reply To: Sound Test Hohner Professional 36 & Wooden Yamaha P-37D Reply To: Sound Test Hohner Professional 36 & Wooden Yamaha P-37D July 10, 2016 at 11:33 am #7381 DarenKeymaster Bruno – why add corksheet?